public class Test {
    public static void main(String[] args) {
        MyBinaryTree myBinaryTree = new MyBinaryTree();
        MyBinaryTree.TreeNode root = myBinaryTree.createBinaryTree();
        myBinaryTree.preOrder(root);
        System.out.println();
        System.out.println("========");
        myBinaryTree.inOrder(root);
        System.out.println();
        System.out.println("========");
        myBinaryTree.postOrder(root);
        System.out.println();
        System.out.println(myBinaryTree.size2(root));
    }
}
